One serialization provides support for the Atom format, the otherextends the existing HTML serialization to provide `<link>` elementsreferring to the Atom feeds.

Atom formatted output can be had by requesting the `application/atom+xml`format, or by appending a `.atom` to the end of a URL (before the queryportion) that returns one or more tiddlers.

To use this code install the package and then add `tiddlywebplugins.atom`to [system_plugins]http://tiddlyweb.tiddyspace.com/system_plugins] inthe [tiddlywebconfig.py]http://tiddlyweb.tiddlyspace.com/tiddlywebconfig.py]of your instance:

config = { 'system_plugins': ['tiddlywebplugins.atom'], }

If [tiddlywebplugins.differ]http://pypi.python.org/pypi/tiddlywebplugins.differis on `sys.path` and a `depth=<some number="">` argument is supplied to thefeed URL, then the resulting feed will be the tiddlers requested presentedas diffs between tiddler revisions. The number of revisions shown iscontrolled by `<some number="">`.

By default the feed given is all the tiddlers in the collection representedby the given URI, in no particular order. This is not always the bestdefault. If you want a different default you can set `atom.default_filter`in `tiddlywebconfig.py` to a string that represents a TiddlyWeb filter.For example: